During colonization stage AI knows perfectly where which planet is. They don't need to scout at all for colonization. I will try to collect more data, but it seems they even know where all your ships are (somehow they manage to intercept my fleet before I enter their sensor range). I've seen it in GC2, and now it is in GC3 beta. Is it intentional game desing decision or just bug which will (or not) be fixed some day?
Seriously I have to save scum or counter-cheat to reveal most profitable planets.